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Author Question: The period-luminosity relationship is primarily used for main-sequence stars. a. True b. False ... (Read 99 times)

ARLKQ

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The period-luminosity relationship is primarily used for main-sequence stars.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

The interstellar medium is made of ______________.
 
  a. gas b. dust
  c. gas and dust d. None of these choices are correct.



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SAUXC

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Answer to Question 1

False

Answer to Question 2

c





 

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